Enabling electrochemical compatibility of non-flammable phosphate electrolytes for lithium-ion batteries by tuning their molar ratios of salt to solvent

Xingwei Liu; Xiaohui Shen; Faping Zhong; Xiangming Feng; Weihua Chen; Xinping Ai; Hanxi Yang; Yuliang Cao

doi:10.1039/d0cc02940h

Enabling electrochemical compatibility of non-flammable phosphate electrolytes for lithium-ion batteries by tuning their molar ratios of salt to solvent

Chem Commun (Camb). 2020 Jun 16;56(48):6559-6562. doi: 10.1039/d0cc02940h.

Authors

Xingwei Liu¹, Xiaohui Shen¹, Faping Zhong², Xiangming Feng³, Weihua Chen³, Xinping Ai¹, Hanxi Yang¹, Yuliang Cao¹

Affiliations

¹ College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials of Ministry of Education, Wuhan University, Wuhan 430072, China. ylcao@whu.edu.cn.
² National Engineering Research Center of Advanced Energy Storage Materials, Changsha, 410205, China. zfp@corun.com.
³ College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China.

PMID: 32396155
DOI: 10.1039/d0cc02940h

Abstract

We develop a new type of electrolyte with a high molar ratio (MR) of salt to solvent but a low molar concentration by adjusting the molar mass of the solvent. The present 1 : 2 LiFSI-triamyl phosphate electrolyte exhibits a low molar concentration of only 1.35 M along with excellent electrochemical stability against the graphite anode.